Open to opportunities

Việt Nguyễn

@zengratul

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Full Stack Developer specializing in mobile, cloud, and blockchain.

Vietnam

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What I'm looking for

I seek remote or Ho Chi Minh City roles where I can lead technical solutions, build scalable full‑stack systems, mentor teams, and drive cloud, mobile and blockchain projects with focus on security and cost efficiency.

I am a pragmatic full stack developer with extensive experience building web, mobile and cloud solutions for startups and enterprise clients. I deliver end-to-end systems from frontend interfaces to backend services and deployment pipelines.

I have led and contributed to diverse international projects — fintech, DeFi staking, MMO play-to-earn, EdTech, IoT, and e‑commerce — using Next.js, Node/Nest, React Native, Flutter, Prisma and cloud platforms like AWS and Azure. I build secure, scalable systems and automate CI/CD and infrastructure.

My blockchain work includes creating ERC20 tokens, authoring and deploying smart contracts with Hardhat and Ethers.js, and integrating DApp wallet connectivity and subgraphs. I also bring strong mobile delivery experience: React Native, Flutter, Fastlane, Firebase and App Store/Play Store deployment.

I emphasize code quality, testing, performance and security: linting, commit hooks, unit tests, secure auth (JWT/Passport/Cognito), ORM/parameterized queries, caching strategies, monitoring and cost optimization. I solve production issues, optimize costs, and help teams deliver robust products quickly.

Experience

Work history, roles, and key accomplishments

Current

Full Stack Developer

Current

Minttown.jp

Oct 2024 - Present (1 year 8 months)

Developed MMO play-to-earn and DeFi staking platforms enabling crypto rewards and seamless withdrawals; built staking smart contracts, wallet integrations and secure authentication flows.

Next.js TypeScript Prisma Hardhat AWS Serverless Tailwind WalletConnect CI CD

Full Stack Developer

IT-Artists.ch

Feb 2023 - Oct 2024 (1 year 8 months)

Delivered multiple client projects including a Swiss voting app and e-commerce sites; migrated legacy PHP to Node.js and maintained complex maintenance projects.

Node NestJS Next.js Azure Kubernetes Terraform PostgreSQL React Native CI CD

Full Stack Developer

Topica

May 2021 - Feb 2023 (1 year 9 months)

Developed an EdTech ecosystem including Edumall and Topica Native, scaling course ecommerce and e-learning platforms with cloud-native infrastructure.

Next.js Kubernetes Google Cloud GraphQL PostgreSQL Terraform CI CD Material UI

Full Stack Developer

Orient Software

Apr 2019 - May 2021 (2 years 1 month)

Built React Native mobile apps and backend services for IoT and home & garden clients, contributing to Karcher projects and mobile feature development.

React Native React Firebase Fastlane Jest CI CD IoT

Full Stack Developer

FPT Telecom

Oct 2016 - Apr 2019 (2 years 6 months)

Developed mobile and desktop apps (React Native, Electron) and backend services for file sharing and advertising platforms, optimizing uploads and performance.

React Native Electron Redis PostgreSQL Docker CI CD Performance Optimization